This study investigates the electrical behavior of Ethylene Propylene Rubber (EPR) insulation used in instrumentation and control (I and C) cables in nuclear power plants (NPPs). Cables were subjected to different accelerated radiation aging dose rates, 100 Gy/h and 800 Gy/h respectively. After aging, dissipation factor (tanδ) trend with frequency from 500 Hz to 500 kHz was obtained. Results show that tanδ of the higher dose rates depicts a faster increase than the lower one, following the aging severity. In particular, the tanδ trend at high frequencies (greater than 100 kHz) shows a linear increase with aging for both dose rates, proposing it as a suitable radiation aging marker for EPR materials.
Jin, J., Suraci, S.V., Fabiani, D., Tamus, Z.A. (2024). Investigation of the Effect of Different Radiation Dose Rates on the Electrical Properties of EPR-Insulated I&C Cables. 345 E 47TH ST, NEW YORK, NY 10017 USA : Institute of Electrical and Electronics Engineers Inc. [10.1109/Diagnostika61830.2024.10693880].
Investigation of the Effect of Different Radiation Dose Rates on the Electrical Properties of EPR-Insulated I&C Cables
Jin J.;Suraci S. V.;Fabiani D.;
2024
Abstract
This study investigates the electrical behavior of Ethylene Propylene Rubber (EPR) insulation used in instrumentation and control (I and C) cables in nuclear power plants (NPPs). Cables were subjected to different accelerated radiation aging dose rates, 100 Gy/h and 800 Gy/h respectively. After aging, dissipation factor (tanδ) trend with frequency from 500 Hz to 500 kHz was obtained. Results show that tanδ of the higher dose rates depicts a faster increase than the lower one, following the aging severity. In particular, the tanδ trend at high frequencies (greater than 100 kHz) shows a linear increase with aging for both dose rates, proposing it as a suitable radiation aging marker for EPR materials.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
